If you're having trouble on "I'm Too Young To Die" with that pesky first enemy of the game, then this patch is for you! All enemies: 1) go at half speed, 2) can't shoot, and 3) light up in dark rooms. Also, the Spectres are fully visible. The only enemy whose "weapon" I left is the final DOOM ][ boss (because you're still in no danger from him). Finally, exploding barrels and rockets do no radius damage. The only threat left is acid floors. Dangerous, huh? The only disadvantage (besides the game being boring as hell) is that this makes rockets do less damage to what they hit, and you have to aim perfectly or no damage.

This is from July 1998. It makes the monsters amble around at half speed, and they don't attack you, although they continue to advance and circle around you. The end result makes Doom feel a bit like a version of Second Life in which everybody is magnetically drawn to you, but they can't express themselves. It's not recommended if you're worried by crowds of people.